Franco Leoni: Biographical and compositional background from Opera Glass with list of operas and selected other works.
Franco Leoni (1864-1949): Listing at The Lied and Art Song Texts Page with selected lyrics.
Leoni, Franco: Brief biography from the Grove Concise Dictionary of Music entry at WQXR radio noting his operatic and vocal works.
Leoni, Franco: A Spring Song: Facsimile of his setting of William Akerman's lyrics with complete score from the Digital Collections of the National Library of Australia.